Table 1. Inbreeding coefficients and effective population size in Tanzanian cattle breeds.
| Breed | Sukuma | Tarime | Maasai | Boran | Friesian |
|---|---|---|---|---|---|
| F-ROH (±SD) | 0.005±0.01 | 0.009±0.03 | 0.023±0.05 | 0.012±0.01 | 0.018±0.03 |
| Mean length of ROH (±SD, Mb) | 10.65±11.40 | 13.12±13.63 | 17.46±14.79 | 9.48±6.56 | 9.68±7.73 |
| Total number of ROH | 36 | 56 | 103 | 99 | 155 |
| Individuals lacking ROH (%) | 64.7 | 32.4 | 51.5 | 12.5 | 26.5 |
| F-geno (±SD) | 0.010±0.03* | 0.013±0.04* | 0.025±0.05* | -0.005±0.04* | 0.188±0.12** |
| r (F-ROH—F-geno) | 0.61* | 0.75* | 0.90* | 0.56* | 0.54** |
| Expected heterozygosity (He) | 0.401* | 0.401* | 0.401* | 0.400* | 0.321** |
| Observed heterozygosity (Ho) | 0.396* | 0.395* | 0.390* | 0.403* | 0.228** |
| Ne (10) | 67 | 119 | 96 | 115 | 36 |
| Ne (350) | 990 | 1249 | 1166 | 1210 | 795 |
SD: Standard deviation; Mb: Megabase; r = Correlation coefficient (approximate correlation) between ROH based inbreeding (F-ROH) and genomic based inbreeding (F-geno), calculated when no pedigree or accuracy of F-ROH or F-geno could not be obtained, values >0.7 indicate similarity; Ne = Effective population size (generation ago);
*Estimated in Bos indicus;
**Estimated in all breeds